SQL Server Performance

Performance Problem!

Discussion in 'SQL Server 2005 T-SQL Performance Tuning' started by sarigulyavuz, Feb 11, 2010.

  1. sarigulyavuz New Member

    Hi
    In my system I use sql server 2005 enterprise edition. My db is about 100 gb. I analyzed with DTA and created indexes that is needed but performance didn't improve. when I look execution plan I see a lot of table spools, costant scan, nested loop. what are these and how can I get rid of them? besides I think I have also a problem with recompilation. could you help me about how to prevent recompition?
  2. FrankKalis Moderator

    Welcome to the forum!
    You're asking a very broad question without providing much information about your actual problems. The execution plan operators you've mentioned are explained here on the site in multiple articles. Just look around and read. You'll find that the only operator to maybe worry about is a table spool and even that is not necessarily always true.
    Also, check out these MS whitepapers:
    Troubleshooting Performance Problems in SQL Server 2005
    Batch Compilation, Recompilation, and Plan Caching Issues in SQL Server 2005
  3. preethi Member

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